I read somewhere that auxiliary verbs are always strong (stressed or pronounced with full vowels) when combined with not. I'm not talking about contractions but when they're fully enunciated: You are not, she has not, they have not, etc. As native speakers, do you pronounce them weak or strong in these situations?
Also, when combined with been: do you use weak auxiliary or strong auxiliary forms as in she has been, they have been, etc? Plus, is been normally weak, pronounced with KIT vowel, or strong, FLEECE vowel?
Lastly, there, as a dummy subject, do you pronounce it weak, with schwa, or strong, with SQUARE, as in there to be, there are a, there is, etc? If it can be weak or strong, when would you normally use it strong and weak? Like at the end or beginning, middle of sentence, etc. Tag question is there? does it has weak or strong there?
I would greatly appreciate any answer or input, and forgive me if the question is too long. Also, I would like to hear especially from natives, and especially from how they say it naturally, and not by rules from manuals, etc, and if they're British, American, etc.
Any help would be greatly appreciated. Thanks for your time.